/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */
package javax.swing.plaf.nimbus;

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.Painter;


final class TreeCellEditorPainter extends AbstractRegionPainter {

  //package private integers representing the available states that
  //this painter will paint. These are used when creating a new instance
  //of TreeCellEditorPainter to determine which region/state is being painted
  //by that instance.
  static final int BACKGROUND_DISABLED = 1;
  static final int BACKGROUND_ENABLED = 2;
  static final int BACKGROUND_ENABLED_FOCUSED = 3;
  static final int BACKGROUND_SELECTED = 4;


  private int state; //refers to one of the static final ints above
  private PaintContext ctx;

  //the following 4 variables are reused during the painting code of the layers
  private Path2D path = new Path2D.Float();
  private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
  private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
  private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);

  //All Colors used for painting are stored here. Ideally, only those colors being used
  //by a particular instance of TreeCellEditorPainter would be created. For the moment at least,
  //however, all are created for each instance.
  private Color color1 = decodeColor("nimbusBlueGrey", 0.0f, -0.017358616f, -0.11372548f, 0);
  private Color color2 = decodeColor("nimbusFocus", 0.0f, 0.0f, 0.0f, 0);


  //Array of current component colors, updated in each paint call
  private Object[] componentColors;

  public TreeCellEditorPainter(PaintContext ctx, int state) {
    super();
    this.state = state;
    this.ctx = ctx;
  }

  @Override
  protected void doPaint(Graphics2D g, JComponent c, int width, int height,
      Object[] extendedCacheKeys) {
    //populate componentColors array with colors calculated in getExtendedCacheKeys call
    componentColors = extendedCacheKeys;
    //generate this entire method. Each state/bg/fg/border combo that has
    //been painted gets its own KEY and paint method.
    switch (state) {
      case BACKGROUND_ENABLED:
        paintBackgroundEnabled(g);
        break;
      case BACKGROUND_ENABLED_FOCUSED:
        paintBackgroundEnabledAndFocused(g);
        break;

    }
  }


  @Override
  protected final PaintContext getPaintContext() {
    return ctx;
  }

  private void paintBackgroundEnabled(Graphics2D g) {
    path = decodePath1();
    g.setPaint(color1);
    g.fill(path);

  }

  private void paintBackgroundEnabledAndFocused(Graphics2D g) {
    path = decodePath2();
    g.setPaint(color2);
    g.fill(path);

  }


  private Path2D decodePath1() {
    path.reset();
    path.moveTo(decodeX(0.0f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(3.0f));
    path.lineTo(decodeX(3.0f), decodeY(3.0f));
    path.lineTo(decodeX(3.0f), decodeY(0.0f));
    path.lineTo(decodeX(0.2f), decodeY(0.0f));
    path.lineTo(decodeX(0.2f), decodeY(0.2f));
    path.lineTo(decodeX(2.8f), decodeY(0.2f));
    path.lineTo(decodeX(2.8f), decodeY(2.8f));
    path.lineTo(decodeX(0.2f), decodeY(2.8f));
    path.lineTo(decodeX(0.2f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(0.0f));
    path.closePath();
    return path;
  }

  private Path2D decodePath2() {
    path.reset();
    path.moveTo(decodeX(0.0f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(3.0f));
    path.lineTo(decodeX(3.0f), decodeY(3.0f));
    path.lineTo(decodeX(3.0f), decodeY(0.0f));
    path.lineTo(decodeX(0.24000001f), decodeY(0.0f));
    path.lineTo(decodeX(0.24000001f), decodeY(0.24000001f));
    path.lineTo(decodeX(2.7600007f), decodeY(0.24000001f));
    path.lineTo(decodeX(2.7600007f), decodeY(2.7599998f));
    path.lineTo(decodeX(0.24000001f), decodeY(2.7599998f));
    path.lineTo(decodeX(0.24000001f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(0.0f));
    path.closePath();
    return path;
  }


}
